Over the last 50 years, membership in the American Psychological Association has

During toddlerhood, ______________________________

a. those who know each other well usually engage in solitary play rather than other forms of play b. friendships are based on companionship, mutual affection, and emotional closeness c. there seems to be no preference for play partners; they play equally with whatever children are present d. children are not yet capable of engaging in simply social play or cooperative pretend play

Anne experienced extreme pain at the dentist as a child. Now, she goes to a different dentist, but feels her heart race when she arrives, and goes down when she leaves

Her heart racing whenever she goes to the dentist is due to __________, and the calming feeling when she leaves is due to __________. a) classical conditioning, operant conditioning. b) operant conditioning, classical conditioning. c) operant conditioning, meditational learning. d) operant conditioning, modeling.